Hexadiyne
[化] 己二炔
🗣️ 情景例句
Pete Waters, RFD Number 1, Chesterton.
Pete Waters，Chesterton乡村免费邮递路 一号 。
I saw him last Monday.
我上个星期一看到他。
Open the window and air the room.
打开窗子，给房间通通风。